5.2. Lauch the GENI Desktop

Before the GENI Desktop launches, it will ask for the passphrase on your ssh key. Type that followed by a return.

You will be taken to the Slices page of the GENI Desktop. Select your Project from the top right of the page.

To find your slice, click on the Show button next to Other Slices

When you see your slice listed, select it and click on Display Checked Slices

Your slice will appear in the list of slices and you will see a ? under the Status column as the GENI Desktop queries the aggregates for the status of your slice. Wait until the status changes to Has Resources

Now click on the Initialize button in the same row as your slice listing

After the slice is initialized, click on the Instrumentize button

When the instrumentize is complete, click on the GENI Desktop button. You will get a warning from your browser about the site's security certificate not being trusted. Be sure to accept the cert.

You will see a page that looks like this (see figure). You may have to rearrange the nodes in the graph so the topology is clear.

5.3 Setting up your visualization

We are now ready to ask graphs of traffic on the four links of our topology.

Click on the launcher which is the button with the rocket icon and select Passive Graphs Lite in the menu that pops up

On the GEMINI Graphs menu that pops up, deselect all boxes and select linkoctets . We will be graphing the number of octets on the links.

For each of the links in the experiment: (1) Click on the link to select it and (2) Click on Add Graphs with Title . For each link you will get a pair of graph showing the number of octets going in and out of each interface on the link. (See figure.)

You can close the GEMINI Graphs menu.

5.4 Visualizing your Experiment

At this point you will see four graphs showing traffic on each of the four links on your experiment. The traffic you see on the links is broadcast traffic from the switch on the rack to which these nodes connect. It is not related to your experiment.

Go back to the ssh window you used to log into the researcher node when you did the CCN exercise.

Use the client.py program to fetch precipitation data for a time period you had not previously fetched. This is to make sure the data will be fetched from the data source (dsrc1) and not from the cache at some node. The time period must be between 1 Jan 1901 and 31 Dec 31 1902.

Your graphs should now show traffic on the rschr-router and router-dsrc1 links (see example below). This is because the precipitation data was not cached anywhere and had to be fetched from the data source.